Doctor profile · Federal record
Dr. Gary Guo, MD
Internal Medicine Physician (CMS: Internal Medicine) · Valhalla, NY
- NPI 1932129582
- Accepts Medicare
- 44 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
95 Grasslands RD-Nymc, Dept of Medicine-Munger Pavilion
Valhalla, NY 10595
(914) 493-8370
fax (914) 594-4434
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- February 29, 2008
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New York #234103
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1932129582. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
504
Distinct HCPCS
3
Medicare allowed
$49,035
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 403 | 130 | $92 | |
99238 |
Hospital discharge day management, 30 minutes or less | 80 | 79 | $95 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 21 | 21 | $202 |
In context: peer comparison
Among 21 peers in this city , average services per provider: 104. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$438
Transactions
16
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| PFIZER INC. | 12 | $243.64 | |
| Alexion Pharmaceuticals, Inc. | 1 | $122.91 | |
| Janssen Pharmaceuticals, Inc | 3 | $71.67 |
By nature of payment
Frequently asked questions
What is Dr. Gary Guo's medical specialty?
Dr. Gary Guo practices Internal Medicine Physician in Valhalla, NY.
Where does Dr. Gary Guo practice?
Dr. Gary Guo practices at 95 Grasslands RD-Nymc, Valhalla, NY 10595. Office phone: 9144938370.
What is Dr. Gary Guo's NPI?
Dr. Gary Guo's National Provider Identifier (NPI) is 1932129582, issued by NPPES.
Does Dr. Gary Guo accept Medicare assignment?
Yes. Dr. Gary Guo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gary Guo commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99238); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.